> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Tuesday, February 28, 2023 8:30 PM > > On Tue, Feb 28, 2023 at 02:35:25AM +0000, Liu, Yi L wrote: > > > > And the commit message is sort of out of sync with the patch, more like: > > > > > > vfio: Pass the pt_id as an argument to vfio_iommufd_bind() > > > > > > To support binding the cdev the pt_id must come from userspace > instead > > > of being forced to the compat_ioas_id. > > > > > > > Got it. not only pt_id, also dev_id. 😊 > > Maybe dev_id should be read back from the iommufd_device pointer in > the vfio_device. It is trivially stored in that memory already Yes. this somehow gives me a doubt. Why iommufd_device_bind() returns both iommufd_device pointer and the id back as id is already stored in the iommufd_device. Is it? Regards, Yi Liu